Abstract: The disclosure relates to a housing for electrical components and to a method for connecting a housing body to a housing cover. The housing includes the housing body. The base plate supports components arranged thereon. The housing also includes the housing cover which is fastened to the base plate by way of crimp tabs. The crimp tabs are bent over in such a way that the housing cover is interlockingly connected to the housing body. The disclosure also relates a method for connecting the housing to the housing cover. An edge region of the base plate projects beyond the contact surface of the housing body, where crimp tabs that have been bent over lie against the contact surface. Some of the crimp tabs may be designed as extended crimp tabs that partially extend around horizontal body surfaces of the housing body, which lies on the base plate.

Abstract: The disclosure relates to a housing for electrical components and to a method for connecting a housing body to a housing cover. The housing includes the housing body. The base plate supports components arranged thereon. The housing also includes the housing cover which is fastened to the base plate by way of crimp tabs. The crimp tabs are bent over in such a way that the housing cover is interlockingly connected to the housing body. The disclosure also relates a method for connecting the housing to the housing cover. An edge region of the base plate projects beyond the contact surface of the housing body, where crimp tabs that have been bent over lie against the contact surface. Some of the crimp tabs may be designed as extended crimp tabs that partially extend around horizontal body surfaces of the housing body, which lies on the base plate.

Abstract: Detectable warning areas (DWAs) and methods of forming the same are provided. A mat template having one or more holes can be placed over a substrate, and a dome-forming material can be filled in the mat template by pouring the dome-forming material over the mat template and working the dome-forming material into the one or more holes of the mat template. The mat template can remain in place until the dome-forming material is completely cured, and then the mat template can be removed. DWAs formed according to this method display improved properties, including increased bond strength.

Abstract: A control device for a motor vehicle includes a housing having a housing cover and a housing base, a sealing device between the housing cover and the housing base, at least one circuit carrier having electrically conductive tracks, and at least one electronic component disposed on the circuit carrier. The control device further includes at least one conductor structure extending out of the interior of the housing, and at least one electrically conductive connecting line which connects the electronic component to the conductor structure. A getter layer is thermally sprayed on the inner face of the housing to protect the metal parts, which transmit current or data in the interior of the control device, against corrosive gases. The getter layer has a high specific surface area.

Abstract: A control device for a motor vehicle includes a housing having a housing cover and a housing base, a sealing device between the housing cover and the housing base, at least one circuit carrier having electrically conductive tracks, and at least one electronic component disposed on the circuit carrier. The control device further includes at least one conductor structure extending out of the interior of the housing, and at least one electrically conductive connecting line which connects the electronic component to the conductor structure. A getter layer is thermally sprayed on the inner face of the housing to protect the metal parts, which transmit current or data in the interior of the control device, against corrosive gases. The getter layer has a high specific surface area.

Abstract: Detectable warning areas (DWAs) and methods of forming the same are provided. A mat template having one or more holes can be placed over a substrate, and a dome-forming material can be filled in the mat template by pouring the dome-forming material over the mat template and working the dome-forming material into the one or more holes of the mat template. The mat template can remain in place until the dome-forming material is completely cured, and then the mat template can be removed. DWAs formed according to this method display improved properties, including increased bond strength.

Abstract: The present invention relates to proppants and the manufacture of proppants by contacting a substrate with an alkali-activated composition that cures to form a continuous polymer coating.

Abstract: An electromechanical subassembly has a cover control module equipped with a printed circuit and with first contacts, a mechanical module equipped with second contacts and a support module for securing the cover control module and the mechanical module to the support module. The support module includes first electrical terminals for contacting the first contacts, second electrical terminals for contacting the second contacts and at least one electrical connector for contacting the electromechanical subassembly and the control circuit forming part of the cover.

Abstract: A method of forming lightweight, high-strength proppants is disclosed, comprising the steps of: homogeneously blending at least one ceramic precursor and at least one pore former; pelletizing the blend to form microspheres; heating the microspheres to less than sintering temperatures, to evaporate volatile components and pyrolyze fugitive components; further heating the microspheres to temperatures sufficient to sinter the continuous phase of the ceramic precursor, to form sintered particles; and then forming the sintered particles into generally spheroid proppants. The generally spheroid proppants, which have preferably been sintered to near theoretical density, may then be coated. Heating of the microspheres may comprise a series of heating stages.

Abstract: The invention relates to an electromechanical sub-assembly comprising a control module equipped with first contacts, a mechanical module equipped with second contacts and a support module for fixing the control module and the mechanical module. The support module comprises first terminals for contacting the first contacts, second terminals for contacting the second contacts and at least one connection device for contacting the electromechanical sub-assembly.

Abstract: A lightweight, high-strength proppant is disclosed, comprising the formation of finely dispersed ceramic precursors and sintering at low temperatures, causing the formation and retention of mesopores and micropores in pelletized ceramic. A method of manufacturing such a proppant is also disclosed, comprising the steps of manufacturing finely divided ceramic precursors and additives using grinding, milling, and preferably sol-gel processes, and dispersing the finely divided ceramic precursors and additives in a liquid, preferably water. The dispersion has a viscosity profile, which permits the shaping of spheres using conventional pelletizing techniques. Drying of the pellets and sintering at temperatures below 1,400.degrees. C. forms and retains mesopores and micropores in the ceramic. Preferred total pore volumes range from 0.05 to 0.7 cm.sup.3/g. The pelletized and porous ceramic is useful as lightweight and high-strength proppants.

Abstract: Small spheres, commonly referred to as proppants, are manufactured from sol-gel ceramics, preferably aluminosilicates or phosphates, and include chemical composites termed geopolymers. In the preferred manufacturing process, the required chemical components are blended, and the proppant particles are shaped and cured at low temperatures. The proppant particles have high compressive strength, are chemically inert, and a low specific gravity, making them particularly suited for hydraulic fracturing.